das vs placental

das and placental both are nouns.

Word	Noun	Adjective	Verb	Adverb
das	Yes	No	No	No
placental	Yes	Yes	No	No

As nouns, placental is a hypernym of das; that is, placental is a word with a broader meaning than das:

das: any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes
placental: mammals having a placenta; all mammals except monotremes and marsupials

Other hypernyms of das include eutherian, eutherian mammal, placental mammal.

das (noun)	placental (noun)
any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes	mammals having a placenta; all mammals except monotremes and marsupials

das (adjective)	placental (adjective)
	pertaining to or having or occurring by means of a placenta